Premium
Inheritance of a New Nonnodulation Gene in Chickpea
Author(s) -
Singh Onkar,
Rheenen H. A.,
Rupela O. P.
Publication year - 1992
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci1992.0011183x003200010009x
Subject(s) - biology , complementation , mutant , genetics , backcrossing , allele , gene , phenotype , inheritance (genetic algorithm)
A study was conducted to investigate the host genetic control of nonnodulation in a new nonnodulating chickpea ( Cicer arietinum L.) mutant, ICC 435M, and its relationship with a previously identified mutant, PM 233. The mutant ICC 435M was crossed with its normal nodulating parent and with mutant PM 233. The nodulation of 35‐d‐old plants of the parents, F 1 , F 2 , and backcross progenies was examined in a glasshouse to study the inheritance of nonnodulation (Nod‐). Experiments indicated that nonnodulation in mutant ICC 435M is inherited as a monogenic recessive trait. Progeny tests of crosses between the two mutants showed that recessive alleles at two different loci are responsible for nonnodulation in mutants ICC 435M and PM 233. The F 1 plants showed normal nodulation, indicating genetic complementation. The gene symbol m6 is proposed to be assigned to the allele controlling the Nod‐ phenotype in mutant ICC 435M.